Fire-door lock.



H. G. VOIGHVT.

Patented Aug. 26, 1913.

3 SHEETS-SHEET 1.

H. G'. VOIGHT.

FIRE DOOR LOOK.

APPLICATION FILED JAN. 14. 1913.

Patented Aug. 26, 1913. E 53 SHEETS-SHEET 2. 7

OIGHT H. G. VOIGHT.

FIRE noon LOOK.

APPLICATION FILED JAN. 14. 1913.

1,071,656. Patnted Aug.'26, 1913.

a sums-sum a.

Ill- I I III" {1; Hu fE fl 7i 15 HENRY G. VOIG-I-IT, OF NEW BRITAIN,CONNECTICUT.

FIRE-DOOR LOCK.

Specification of Letters Patent.

Patented Aug. 26,1913.

Application filed January 14, 1913. Serial No. 741,916.

T 0 all whom it may concern Be it known that I, HENRY G. Vororrr, acitizen of the United States, residing at New Britain, county ofHartford, State of Connecticut, have invented certain new and usefulImprovements in Fire-Door Locks, of which the following is a full,clear, and exact description.

This invention relates to looks of the fire door type, such as used inpublic buildings, etc, and particularly to that type of lock shown in myprior Patent No. 1,047,900, dated December 17, 1912, in which aplurality of spaced locking bolt members are controlled and retractablethrough a common operating means.

My present invention aims to provide an improved lock of this typeproviding a simple unitary structure and embodying the improvedstructural features and advantages more particularly pointed out in thefollowing specification taken in connection with the accompanyingdrawings forming part thereof and illustrating a preferable embodimentof the invention.

In these drawings, Figure 1 is a fragmentary vertical section takenthrough the edge of a hollow metal door having my improved form ofunitary lock applied thereto., Fig. 2 is a fragmentary top plan view ofthe door shown in Fig. 1, the top edge plate of the door being removed.Fig. 3 is a fragmentary view in elevation of the upper part of the doorcasing and lock, the front wall of the door being removed to disclosethe interior arrangement. Fig. 4 is a fragmentary vertical sectionalView showing one of the locking bolts projected. Fig. 5 is a verticalsection through said parts taken transversely of the door. mentaryvertical sectional View showing a locking bolt in retracted position.Fig. 7 is a vertical sectional view through said parts takentransversely of the door. Fig. 8 shows views in top plan of the guidingbrackets for the bolt operating bar. is a detail view in top plan andside eleva tion of a locking bolt. Fig. 10 is a detail view in top planand side elevation of a locking dog. Fig. 11 is a detail in side andedge elevation of a bolt actuating link. Fig. 12 is a fragmentary viewin rear and side elevation of the operating bar.

The lock forming the subject matter of this invention is intended forapplication in a unit form to the front edge of a hollow Fig. 6 1s afrag- Fig. 9

.nietal door, being insertible directly from the edge of the'door. Thecasing support- -1ng the lock parts is formed as an angle ironcomprising the side bars 1 and 2 which may be readily formed to providethe proper bevel for the edge of the door. This angle iron extendssubstantially the entire height of the door and its bar 1 at suitableintervals longitudinally thereof is provided with studs 3 adapted tosecure the angle iron to the inner face of the door opposite its bar 1.Extending vertically of the door edge and longitudinally of the bar 2,are a plurality of spaced guiding brackets as 4, 5 and 6, each beingsecured to the bar 2 of the angle iron and each having therein anaperture 7, these apertures being progressively elongated from thebottom of the door upwardly. An operating bar 8 is guided through theapertures 7 of these brackets, this operating bar moving vertically inthese apertures, and by reason of the elongation thereof in the upperguiding brackets, having also a lateral movement therein, as will bemore clearly seen later.

9 designates a plurality of locking bolts spaced apart and extendingvertically of the door and in alinement, each of these bolts.

being provided at its outer end with a roller latching head 10 andadjacent its inner end with an elongated slot 11, through which a headstud 12 extends and is secured to bar 1 of the angle iron. These lockingbolts are provided with laterally offset lugs 13 at their upper edges.Bolt actuating links 14 have their lower ends pivotally mounted on studs15 secured to and projecting from bar 1 of the angle iron and havingtheir upper ends provided with bayonet slots 16, in which studs 17carried by the bolts, operate. The under edges of these links 14 arebeveled as at 14*. 18 designates pivoted locking dogs carried by studs19 projecting from the bar 1, one of these locking dogs being providedfor each bolt and cooperating with the offset lug 13 thereof. The anglebar 2 is suitably apertured to permit the projection therethrough of theroller heads of the locking bolts, and at the point of such apertures,metal guides 20 are pro vided, these guides being suitably secured tothe inner face of the bar 2 at such points.

At a point intermediate its upper and lower ends, the bar 1 of the angleiron is provided with a lateral offset 21 and a lock casing 22 issuitably secured to the inner face of the bar 1 and its offset portion21. This casing carries a knob spindle 23 and a roll-back 24L controlledthereby. A yoke member 25 rests on the roll-back 24L and is rigidlysecured to the operating bar 8, so that movement of the roll-back willserve to move said yoke and through it the operating bar 8. Theoperating spindle 23 and its roll-back 24: are operated from theinterior of the door by any suitable manually operable means. Thespecific construction, however, of these operating means forms no partof the present invention, though such means may, and preferably do, takethe form of those shown in my prior patent hereinbefore referred to, No.1,047,900.

The operating bar 8 carries a plurality of pins 26 which are positionedto rest under the beveled edges 14? of the bolt operating links 14. Theupper end of the operating bar extends through the aperture in thetopmost guiding bracket 6 and has fixedly secured to its upper end ahead 27 having a laterally offset portion 28. The bar 2 of the angleiron at a point adjacent the head 27, has attached thereto a guidingbracket 29 against the inner face of which the edge of the offset 28rests when the bolt members are projected. Adjacent this guiding bracket29 and carried by the bar 1 of the angle iron, are spaced ears 30between which a dog 31 is pivotally mounted. This dog is provided at itsouter end with a roller contact 32 which is adapted to project through asuitable aperture formed in the bar 2 at this point. The bar 2 of theangle iron forms the edge of the door and a finishing plate 33 may beand preferably is secured thereto, by welding or otherwise, this platebeing provided with apertures therein alining with those formed in thebar 2 of the angle iron.

The parts so far described, when assembled, form a completely assembledunit and may be inserted as a unit within a hollow metal door at itsedge. In the drawings, 3% and 35 designate the side walls of such a doorand 36 and 37 its top and bottom walls, the unit lock being insertedwithin these walls of the door and its bar 2 and finishing plate 3forming the door edge. The bar 1 of the angle iron frame is suitablysecured as by welding to the inner face of the wall 34 of the hollowdoor, and the studs 3 projecting from said bar are of such length thatthey may be spot-welded to the inner face of the opposite wall 35 ofsaid hollow door. By employing such welding studs in connection with anangle iron frame, the cost of material is reduced to a minimum and thelock frame is made in such form Assuming that the door is closed, withthe latch heads 10 of the locking bolts projecting into suitable socketsformed in the strike plates of the door jamb, and with the dog 31 movedinwardly within the lock casing by contact with the flush face of the 73strike plate at that point. In order to open the door, say from theinterior, the rollback 24 is operated by an interior handle moving theyoke 25 upwardly and with it 75 the operating bar 8. The pins 26 of theoperating bar will engage the beveled edges 1 1 of the links 1 1 movingthese links inwardly, and bring the pins 17 in their bayonet slots fromthe position shown in Fig. 4 83 to that shown in Fig. 6 and retractingthe locking bolt-s 9 and their latching heads 10. lVhen these bolts areprojected, the ends of the locking dogs 18 rest in rear of the offsetlugs 13 of the locking bolts, so that the door may not besurreptitiously opened from the exterior by the insertion of a knife orother implement between the jamb and door. When, however, the operatingbar 8 is moved upwardly through the roll-back 24:, the upper ends of thelinks 1 1, which rest beneath the locking dogs, will engage with theirunder edges and lift them from in rear of the bolt offsets 13, so thatupon further movement of these links, the bolts are retracted. It willbe noted that, by reason of the bayonet slots, a preliminary freemovement of these links is permitted to raise the locking dogs out ofthe way, so that by the time the edges of the links at the forward endof the bayonet slots, engage the studs 17 to retract the locking bolts,the locking dogs 18 will have been moved out of the way.

it is desirable to provide means whereby these locking bolts are heldretracted after the door is opened and are automatically projected whenthe door is closed. I have provided such means in my construction andits operation as follows: When the operating bar 8 is raised through theroll-back 2-'l-, the offset upper end 28 of this bar rides on thebracket 29 and the bar moves vertically until the under edge of itsoffset 28 clears the upper edge of the bracket 29, whereupon the weightof the locking bolts and the pressure of the hub, being toward the edgeof the door, the operating bar 8 will move laterally outward in thedirection of the door edge and in doing so will throw the pivoted dog 31outwardly and will project its roller 32 out beyond the edge of thedoor. This lateral movement of the operating bar 8 is permitted byreason of the elongated slots 7 of the upper guiding brackets 5 and G,the aperture 7 in the lower bracket 1 being sufiiciently large to permitthe slight lateral movement of the operating bar at this point. Theofiset upper end 28 of the operating bar 8 will then rest upon the upperface of the bracket 29 and will retain the bolts 9 and their rollers 10in retracted position as long as the door remains open. When the doorcloses, however, the roller 32 of the dog 31 will be pushed inwardly byengagement of the flush face of the strike plate of the door jamb,moving the oifset 28 inwardly and out of engagement with its supportingbracket 29, so that the operating bar 14 will drop by gravity, whichforce will likewise cause the locking bolts to move from the positionshown in Fig. 6 to that shown in Fig. t, this automatic gravity operatedpro j ection of the bolt members being facilitated by the roller heads10 of the bolt members which act as antifriction bearings for the boltsproper, as well as forming the latching heads thereof.

\Vhile I have described herein a specific embodiment of my invention, Idesire it understood that the same is susceptible of various structuralmodifications within the spirit of the invention and the scope of theappended claims.

\Vhat I claim, therefore, and desire to secure by Letters Patent is:

1. In a lock of the character described, in combination, a plurality ofspaced latch bolts, means whereby said bolts may be retracted through acommon operating means, and blocking members separate from andcooperating with said latch bolts to prevent their retractionindependently of said common operating means.

2. In a lock of thecharacter described, in combination, a plurality ofspaced latch bolts, manually controlled means whereby said bolts may beretracted through a common operating means, blocking members separatefrom and cooperating with said latch bolts to prevent their retractionindependently of said common operating means, and means whereby saidblocking means is rendered inoperative upon movement of said commonoperating means to retract said latch bolts.

3. In a lock of the character described, in combination, a plurality ofspaced latch bolts, means normally tending to project said bolts,manually controlled means whereby said bolts may be retracted through acommon operating means, blocking means cooperating with said latch boltsto prevent their retraction independently of said common operatingmeans, and means whereby said blocking means is automatically moved toinoperative position upon movement of said common operating means toretract said latch bolts.

4:. In a lock of the character described, in combination, a plurality ofspaced latch bolts, means normally tending to project said bolts, acommon operating member for said bolts, operative connections betweensaid member and each latch bolt, manually 'operable means for actuatingsaid member to retract said latch bolts, a blocking membolts, meansnormally tending to project said bolts, a common operating member forsaid bolts, operative connections between said member and each latchbolt constructed and arranged to permit a preliminary free movementthereof independently of said latch bolts, manually operable means foractuating said operating member to retract said latch bolts, a blockingmember cooperating with each latch bolt to prevent its retractionindependently of said operating member, and means whereby thepreliminary free movement of said connections, when operated throughsaid common mem ber, serves to inoperatively position said blockingmembers, and whereby further movement of said connections retracts saidbolts.

6. In a lock, in combination, a latch bolt, a manually controlledoperating member, a link connected to said operating member having alost motion connection with said bolt and adapted to retract the same,and a blocking dog cooperating with said bolt to lock the same againstretraction independently of said operating member and inoperativelypositioned by said link when actuated by said operating member toretract said bolt.

7. In a lock of the character described, in combination, a latch bolt,an operating member therefor arranged for bodily movement in twodiflerent directions, means controlled by movement of said member in onedirection to retract said bolt, a support for said operating memberpositioned out of the line of bolt retracting movement thereof, andarranged to guide said member in bolt retracting direction,- manuallycontrolled means for bodily moving said operating member in guided boltretracting direction, and for imparting a further bodily movement tosaid member at the end of bolt retracting movement but in a differentdirection to engage said member with said support whereby said member isheld in bolt retracted position, and means operable by the closing ofthe door to automatically move said operating member from its support.

81 In a lock of the character described, in combination, a plurality ofspaced latch bolts, a common operating member for said bolts operativelyconnected therewith and normally tending to move said bolts to projectedposition, said member being arranged to retract said bolts in onedirection of movement, a support for said member positioned out of theline of bolt retracting movement thereof and arranged to guide saidmember in bolt retracting direction, manually controlled means forbodily moving said operating member in guided bolt retracting directionand for imparting a further bodily movement to said member at the end ofbolt retracting movement, but in a different direction to engage saidmember with said support, whereby said member is held in bolt retractedposition, and means operable by the closing of the door to automaticallymove said member from its support, whereby said bolts may be projectedthereby.

9. In a lock of the character described, in combination, a. plurality ofspaced latch bolts, a common operating bar for said bolts operativelyconnected therewith and normally tending to move said bolts to projectedposition and arranged for successive bodily movements in substantiallyvertical and horizontal directions, movement of said bar in verticaldirection operating to project and retract said bolts, said bar havingan offset thereon, a support for said bar p0- sitioned out of the lineof Vertical latch projecting and retracting movement of said bar and itsoffset, and arranged to guide said offset and bar in vertical directionof movement, and manually controlled means operable to bodily move saidbar in guided vertical direction to retract said bolts, and to impart tosaid bar a further bodily movement in a horizontal direction at the endof vertical latch retracting movement, to engage said offset with saidsupport, whereby said bar is held in bolt retracted position, and meansoperable by the closing of the door to automatically move said offsetfrom said support, whereby said bar may move in vertical direct-ion toproject said bolts.

10. In a lock of the character described, in combination, a plurality ofspaced latch bolts, normally projected by gravity, a manually controlledoperating bar common to said plurality of bolts and arranged forvertical and lateral movement, operative connections between said barand said bolts adapted to retract said bolts upon vertical movement ofsaid bar, an offset adjacent one end of said bar, a support guiding saidoffset during vertical movement of said bar, means whereby said. bar ismoved laterally at the end of its bolt-retracting movement to seat onsaid support and lock said bolts in retracted position, a movable dogpositioned adjacent said guide and projected by such lateral movement ofsaid offset, and means operable by the closing of the door to move saidoffset from its support to permit the projection of said bolts.

11. In a lock of the character described, in combination, a plurality ofspaced latch bolts, means normally tending to project said bolts, acommon operating member for said bolts, blocking means cooperating withsaid bolts to prevent their retraction independently of said commonoperative member, connections being provided between said member andsaid bolts operative upon initial movement of said member toinoperatively position said blocking means and upon further movementthereof to retract said bolts, supporting means for said operatingmember, means operative upon bolt retracting movement thereof to engagesaid member with its support to thereby lock said bolts in retractedposition, and means operable upon the closing of the door to disengagesaid member from its support to permit the projection of said bolts.

12. In a lock of the character described, in combination, a lock frame,a reciprocating bolt actuating member carried thereby, a bolt membercarried by said frame and projectable and retractable through saidactuating member, said actuating member normally tending to project saidbolt by gravity, a guide member carried by and eX- tending inwardly ofsaid frame, and a roller latching head carried by said bolt member withits periphery resting upon said guide member during projection andretraction.

13. In a lock of the character described, in combination, an angle barforming a lock frame, a reciprocating bolt actuating member extendinglongitudinally thereof, a plurality of spaced bolt members extendingtransversely of said frame and projectable and retractable through saidactuating member, a plurality of guides extending inwardly of said anglebar at points adjacent said bolt members, and roller latching headscarried at the ends of said bo-lt members with their peripheries restingupon said guides during projection and retraction thereof.

l l. As an article of manufacture, a lock frame for use in connectionwith hollow metal doors comprising a substantially L- shaped bar, and aplurality of spaced studs projecting from one of its flanges forattachmentto the interior face of a hollow metal door.

15. In a lock of the character described, a lock frame comprising asubstantially L- shaped metal bar, an operating member carried by andmovable longitudinally of said bar,'a bolt member movable transverselyof said bar and projectable and retractable through said operatingmember, manually and spot Welded to one of the interior faces of saidhollow door.

16. In a lock of the character described, in combination, a lock frame,a plurality of spaced latch bolts carried thereby, a movable operatingbar, operative connections between said bar and each of said bolts,adapted to be actuated by said bar to retract said bolts, a blockingmember cooperating with each latch bolt to prevent its retractionindependently of said operating member, said connections between saidbolts and said operating member being constructed to inoperativelyposition said blocking members upon bolt retracting movement of saidoperating member and means operable upon the opening of the door toretain said bolts in retracted position, said means being adapted to bepositioned by the closing of the door to permit the projection of saidHENRY G. VOIGHT.

itnesses:

GWENDOLINE A. JAoKsoN,

M. S. WIARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. e

